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A 65 nm CMOS technology with a high-performance and low-leakage transistor, a 0.55 /spl mu/m/sup 2/ 6T-SRAM cell and robust hybrid-ULK/Cu interconnects for mobile multimedia applications

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35 Author(s)
Nakai, S. ; Fujitsu Ltd., Tokyo, Japan ; Kojima, M. ; Misawa, N. ; Miyajima, M.
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This paper presents a 65 nm CMOS technology for mobile multimedia applications. The reduction of interconnect capacitance is essential for high-speed data transmission and small power consumption for mobile core chips. We have chosen a hybrid ULK structure which consists of NCS (nano-clustering silica; k=2.25) at the wire level and SiOC (k=2.9) at the via level. Although NCS is a porous material, the NCS/SiOC structure has sufficient mechanical strength to endure CMP pressure and wire bonding. Successfully fabricated 200 nm-pitch hybrid-ULK/Cu interconnects and a high-performance and low-leakage transistors meet the electrical targets from the circuit requirements. Moreover, an embedded 6T-SRAM with a 0.55 /spl mu/m/sup 2/ small cell size has been achieved.

Published in:

Electron Devices Meeting, 2003. IEDM '03 Technical Digest. IEEE International

Date of Conference:

8-10 Dec. 2003